25678398 has 32 divisors (see below), whose sum is σ = 56259360. Its totient is φ = 7777280.

The previous prime is 25678379. The next prime is 25678493. The reversal of 25678398 is 89387652.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1383 + ... + 7298.

It is an arithmetic number, because the mean of its divisors is an integer number (1758105).

Almost surely, 2^25678398 is an apocalyptic number.

25678398 is an abundant number, since it is smaller than the sum of its proper divisors (30580962).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25678398 is a wasteful number, since it uses less digits than its factorization.

25678398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8732.

The product of its digits is 725760, while the sum is 48.

The square root of 25678398 is about 5067.3857165209. The cubic root of 25678398 is about 295.0230681951.

The spelling of 25678398 in words is "twenty-five million, six hundred seventy-eight thousand, three hundred ninety-eight".